Fluid-pressure pump



oct, 7 1924.,

L. S. DOTEN FLUID PRESSURE PUMP 2 Sheets-Sheet l Filed Oct. 24 1922 L. S. DOTEN FLUID PRESSURE PUMP 2 Sheets-Sheet 2 Filed oct. 24, 1922 were 'i LEQNED S. ESTEN, 0F GHICAGU, ILLINOIS.

rnnrn-rnnessonn Application me @atelier M, i922. 'Serial No. 596,608.

(en en' inn or or menen e, isos, o2 eren-n., ees.)

To ell whom t may concer/n:

Be it known thet'l, LEONARD S. Dorner,

c. citizen of the United States, stationed et Chicovo, lll., hevenventeden improvement 1n' Fluid-Pressure Fumps, of which the following is e. specicetion.

The invention described herein may be used by the Government, or any of its omoers or employees in prosecution of work for the Governnriern-t,v or hy any other person in the FUnited States, wlthout payment of 'any royalty thereon.-

This invention relates. to en improved eir lift, end has for its object to provide' ineens whereby air' under pressure is ad? mitted into the lower end of the eduction column, 1s there mixed with the water end i rises et the proper velocity into a. hea/d tank sind is from there piped by gravity to the point desired.

The-cheats in view are to provide a simple, durable and ineXpensive'struoture-of a character that willa after loeing installed, need iittleor no further attention, there heing no wearing parts end therefore little deterioretion.

A "further object/'being to so proportion the eduotion column es to provide the meximnm lift of liquid et the minimum expense of 'flu-idipressure.

A `further object .being to provide dmin iehed pressure et the discharge outlet ofeir supply line, end en effective method of mixing the oir with the water without increasino the rictionel losses.

end other objects will appear in the 'following description, and be finally point'- ed ont in the appended claims.

While o preferred form of the device is shown end described, `it will'he understood that eiight changes in the 'form end minor details ci* construction may loe resorted to without departing 'from the spirit ont the ir.- vention.

. numerals indicate corresponding parte in ell'the igures of the drawings in which: Fig. l is e side elevation, pertly in sections c' the improved oir lift.

Fig. i2 is 'e erom section on line 2--2 of gig. 3 is en enlerged verticel section through vthe partsA at the lower end of the eduction pipe.

Fig. 4 lis e. detail view of the' double conical fluid velocity controlling member.

Fig.' 5 is a cross section on line 5-5 of 1 Fimg.

1 Fig'. Fig. i8.

Fi 10 is e detail section showing a modiiied form of foot piece of cylindrical formation. b l

Reterring to the drawings, it will be `seen that the air lift consists of a pipe for conveying a. mixture of air and 'water from e point a Aconsichernlole depth `loelow the sur- 'tace of the water in the well to a point above the surface of the ground. This pipe is generally known es the edwction pipe end' it can he of one diameter throughout its length or of e gradually increasing di- 6 is a cross section on line 6 6 of 7 is across section on line 7 7 of 8 isle.v detail section of the nozzle. i 9 is e. cross section 'on line 9-'9 of emeter 'from the point of inlet'to point'of" The oir is introduced et o. certain distance helow the euroce of the waiter, dependent upon the required lift of weter eloove the free snrteoe ofthe water in the well. The eirows .into the column of water end the lonhhles of oir ere diused throughout the column of water in the eduction pipe. This condition results in lessening the speoic gravity 'of the contents of the leeluction pipe ond es e. rult ci this., the solid column of weter on the onteide of the pipe form the level. The oir being constently supplied to the lighter col "wit the eduction pipe remesa capacity of the throat of the foot piece, the area of the nozzle', and the gradual increase for the passage of the mixture, are arranged in such proportion as to bring about the most eflicient results.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A fluid pressure pump, comprising an eduction column, a foot piece arraned beneath the normal level. of the liqui to be raised and having a portion of rapidly diminishing area and a portion of gradually increasing area, and means for admitting fluid under pressure centrally into the foot piece at the point of least Water pressure and lighest water velocity.

2. A fluid pressure pump, comprising an eduction column, a foot piece arranged beneath the normal level of the liquid to be raised, mea-ns for reducing the interior area of the foot piece, and means for' admitting fluid pressure centrally into the foot pie at the point of its least area.

3. A fluid pressure pump, comprising an eduction column, a foot piece arranged beneath the normal level of the liquid to be raised, a fluid velocity controlling member mounted in the foot piece, and means for admitting fluid pressure centrally into the foot piece at the point of least Water pressure and highest Water velocity. y

4. A fluid pressure pump, comprising an eduction column, a foot piece arranged beneath the normal level of the liquid to be raised having an inverted conical portion, a conical shaped member mounted in said conical portion, said parts cooperating to gradually increase the internal area of the foot piece, and means for admitting fluid under pressure into the foot piece.

5. A fluid pressure pump, compr1s1ng an eduction column, a' foot p1ece arranged beneath the normal level of the liquid to be raised having an inverted conical ortion, a double conical shaped member a apted at its lower end, in conjunction with said conical portion, to increase the interior area of the foot iece relatively slowly, and at its upper en relativel rapidly, and means for admitting fluid un er pressure into the foot piece. A

6. A fluid pressure pump, comprising an eduction column, a foot piece of Venturi formation, and means for admitting fluid pressure centrally 'into the interior of the foot piece at the point of its least area.

7. A fluid pressure pump, comprising an eduction column, a foot piece of Venturi internal formation, a tail piece, and means for admitting fluid pressure centrally into the foot piece at the point of least Water pressure and hi liest water velocity.

8. A flui pressure pump, comprising a tapered eduction column, a tapered foot piece, a tapered tail piece, and means for admitting fluid pressure into the foot piece at the point of greatest velocity of the liquid to be lifted.

9. A fluid pressure pump, comprisinfr a tapered eduction column, a tapered jbot piece, a tail piece, and means for admitting fluid pressure into the foot piece at its most reduced portion.

10. A fluid pressure pump, comprising an eduction column extending from below the normal level of the liquid to be raised to the .point of discharge and provided with a Venturi shaped portion, means for admitting fluid under pressure into the eduction pipe at the point of its least area, and means for gradually controlling the velocity of the contents of the eduction column.

11. A fluid pressure pump, comprising an eduction column extending from below the normal level of the liquid to be raised, to the point of discharge, means for admitting fluid pressure centrally into the eduction pipe at the point of its least area, 'and means throughout its length for controlling the -velocity of the contents of the eduction column.

12. A fluid lift, comprising a tapered eduction column extending from beneath the normal level of the liquid to be raised, to the point of discharge, lia-ving a tail piece 'rapidly decreasing in area and then gradually increasing in area, a foot piece, and means for admitting fluid pressure into said tail piece centrally at the point of least area.

13. A fluid lift, comprisingr an eduction column extending from beneath the normal level of the liquid to be raised, to the point of discharge, having a tail piece, afoot piece rapidly decreasing-in area through part of its length, and gradually increasing 1n area through part of its length, and means for admitting Huid pressure into the foot piece centrally, at the oint of its least area.

14. A fluid li t, comprising an eduction column extending from beneath the normal level of the liquid to be raised, to the point of discharge, having a tail piece, a foot piece regularly and rapidly diminishin in area through part of its length and gra ually increasing in area through part of its' length, and means for admitting fluid pressure at the point of least area.

15. A fluid lift, comprising an eduction column extending from beneath the normal 

